Parts
At HK Parts, we offer a wide range of high-quality Heckler and Koch accessories and components for your favorite firearms. Whether you are upgrading a Heckler and Koch pistol or rifle, or building with parts kits, we have you covered. Explore top-rated components for VP9, USP, P30, MP5, MP5K, G36, HK416, and more. From triggers, barrels, and grips to magazines, stocks, and sights, find the parts you need to enhance performance, reliability, and function.
Popular upgrades include match triggers, threaded barrels, compensators, optic plates, and extended magazines. Rifle owners often add enhanced stocks, forearms, and ambidextrous controls.
MP5 and MP5K kits are top sellers, giving shooters authentic components for iconic builds. G36 and HK416 kits are also highly sought after by collectors and professionals alike.
HKP offers the world’s largest H&K-focused catalog, with better availability, faster fulfillment, and expert support compared to general retailers.
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HK90 Series Roller for Bolt Head 8.00mm - Standard
H&K Heckler & Koch
$27.95H&K Roller For Bolt Head 8.00mm - Standard The 8mm roller is the proper roller size for the standard "zero" function. The correct 8mm roller is essential for proper head spacing and bolt gap. New HK German, not surplus or used goods, that are worn...HKP-00506$27.95 -
Thread Protector - 9mm - 13.5x1 - LH
H&K Heckler & Koch
$39.95H&K 9mm Thread Protector - Threaded 13.5x1 LH This German HK manufactured 9mm tactical threaded barrel protector fits all HK 9mm threaded barrels that are 13.5x1 metric LH twist. Specifications: Overall Length .45" Outside Diameter ...HKP-00919$39.95 -
HK MP5SD Rubber Handguard
HKP HK Parts
$169.95HK MP5SD Rubber Handguard Made in the USAFits: MP5SD 9mm, MP5SD .40, MP5SD 10mm Counts as 1 US made 922r compliant part. These are only compatible with the HK Parts shroud. If you have a German Shroud you will want to get the German Handguard. HKP-00136HKP-17400$169.95 -
Out Of Stock
HK Sling Pin - Large - Quick Detach Attachment
HKP HK Parts
$37.95HKP Quick Detach Sling Attachment Sling Pin - Large The large stock push pin is used to retain the stock to the receiver on the 90 series of firearms. The QD sling pin is a great replacement item as it will allow the user to simply swap the push pin for...HKP-18070$37.95 -
HK MP5K 9mm SEF Navy Style Trigger Housing - Push Pin - USED
H&K Heckler & Koch
$74.95H&K MP5K 9mm SEF Navy Style Trigger Housing - Push Pin - USED HK German factory date coded SEF grip frame that has been cut to MP5K factory German specs. This style of housing is for push pin firearms that do not require a clipped and pinned housing...HKP-19997-USED$74.95 -
HK MP5K Handguard - 9mm - M-LOK
UTG PRO
$189.95 - $198.95UTG PRO HK MP5K Handguard - 9mm - M-Lok with Picatinny Receiver Extension The new UTG PRO MP5K MLOK handguard with picatinny receiver extension is incredible. This thing is stunning! The machining, finish and fit are flawless. The assembly is...HKP-21151-M$189.95 - $198.95 -
HK USP, USP Compact Magazine Spring
H&K Heckler & Koch
$6.95H&K HK USP & USPC Magazine Spring HK recommends that for optimum performance, one should change out the magazine springs during regular maintenance intervals or when keeping the pistol magazines loaded for long periods. Compatible With: HK USP...HKP-01425$6.95 -
HK MP5, SP5, HK94 Handguard - 9mm - Lightweight
B&T Brugger & Thomet
$259.95B&T Brugger & Thomet HK MP5, SP5, HK94 Handguard - 9mm - Lightweight - Tri-Rail B&T's Lightweight Tri-Rail Handguard is almost 25% lighter with practically identical construction. The handguard offers a total of three NAR/Picatinny rails. One...HKP-19737$259.95 -
HK MP5, SP5, MP5K, SP5K Magazine - 10 Round - 9mm - California Compliant
H&K Heckler & Koch
$88.95California Complaint Magazine 10-30 - MP5, MP5K - German - New This California compliant magazine has a 10 round block pre-installed which converts a factory 30 round magazine into a 10 round magazine. This is the best option to stay legal in...HKP-20670$88.95 -
HK MP5, HK94 Recoil Spring
H&K Heckler & Koch
$12.95HK German MP5, HK94 Recoil Rod Assembly Spring Great replacement and spare recoil spring as this is a common repair and replacement item. Compatible With: HK MP5 HK94 Zenith, POF, AA Clones & custom buildsHKP-01652$12.95 -
HK USP, Mark 23 Magazine, Complete - .45 ACP - 17 Round
HKP HK Parts / Heckler & Koch
$119.95HK Parts and Heckler and Koch complete .45 ACP 17-round Magazine for HK Mark 23 and HK USP Each mag comes fully assembled and ready for use. HK Parts takes an existing German HK 12 round magazine coupled with the +5 magazine extension and assembles...HKP-19465-M$119.95 -
HK VP40, P30, P30L Magazine - 13 Round - .40 S&W
H&K Heckler & Koch
$49.9513 Round S&W Magazine New HK German manufacture & factory fresh manufacture. Compatible With: HK VP40, VP40 Tactical HK P30 HK P30L HK P30S HK P30SK Please Note: This will also fit the USPC & P2000/P2000SK .40 cal models but will...HKP-01474-M$49.95